---------- Forwarded message ---------- From: Another Sillyname <anothersname@xxxxxxxxxxxxxx> Date: 25 June 2010 13:06 Subject: Re: sensors.conf for DFI LP MI P55-T36 (it8720-*) To: Jean Delvare <khali@xxxxxxxxxxxx> On 25 June 2010 10:17, Jean Delvare <khali@xxxxxxxxxxxx> wrote: > On 25 Jun 2010 08:32:06 -0000, Lars Kr.Lundin wrote: >> On Thu, Jun 24, 2010 at 09:18:20AM +0200, Jean Delvare wrote: >> >> > > The bottom line is that your chip is properly configured and won't be >> > > affected by the fix I'm working on. >> >> Many thanks for doing this. >> >> > > >> > > Also note that you could improve your configuration file by adding the >> > > following: >> > > >> > > label in3 "+5V" >> > > label in7 "5VSB" >> > > compute in3 @ * (6.8/10+1), @ / (6.8/10+1) >> > > compute in7 @ * (6.8/10+1), @ / (6.8/10+1) >> >> Thanks! I have updated my sensors.conf at >> http://www.eso.org/~llundin/sff/sensors.conf >> >> For in[01256] I assumed that the reported value _is_ the voltage. >> Is this a valid assumption? > > Yes it is. The IT8720F uses a 4V ADV, so all voltage lines below 3.5V > can be monitored directly. > >> >> > Oh, and while we're here, in4 is +12V. This is confirmed by this >> > snapshot I've found: >> > http://img19.imageshack.us/img19/6122/dmip55os2.png >> > >> > The only missing thing is the scaling factor. Apparently it's not the >> > standard one, otherwise it would read between +10.48 V and +11.32 V on >> > your system, which is definitely too low. >> > >> > Is +12V really not displayed in the hardware monitoring section of your >> > BIOS? This is very surprising. >> > >> >> The +12V is displayed in the BIOS, an example readout is 11.776V, see >> http://www.eso.org/~llundin/sff/p1010501_800x600.jpg > > Can you please wait a bit in this screen and try to gather other sample > values for +12V? If you can gather 2 or 3 different samples, we may be > able to guess the scaling factor. > >> Based on your comments it is now apparent that the voltages displayed in >> the BIOS are reported by sensors in the exact same order. I guess I didn't >> realize this because I didn't know that (some of) the voltages would >> need scaling by sensors. >> >> In one case `sensors` report in4 as 2.62V. If you have a suggestion for >> how to determine the in4 scaling factor then I will be happy to help. > > 2.62V in sensors for 11.776V in the BIOS suggests a scaling factor of > about 4.5. For something more accurate, we need more samples from both > the BIOS (see above) and the it87 driver. "sensors" only displays 2 > decimal places, so better get the exact reading from sysfs directly: > > cat /sys/class/hwmon/hwmon*/device/in4_input > > If you can gather 2 or 3 samples of each, finding the scaling factor > should be reasonably easy. > >> (I wonder if this could have the slightest relevance, but my board is >> powered by a 200W PW-200-M from MINI-Box). > > Wow, this is cute :) Yes, this probably explains why your voltages are > rather below the average. > >> > I suppose you don't have Windows running on your machine for comparison >> > with the DFI software? >> >> No, I did my last Windows installation around 2002. Although I would like >> to help, I cannot say I am sorry about this. > > I fully understand :) > >> Many thanks again for your interest, help and explanations, >> -Lars Lundin. >> PS. Is there any effort to have LM sensors detect an Nvidia GPU temperature? >> I have a collection of (new and old) low-end Nvidia cards and would be >> happy to help. > > We can write the sensor chip drivers (and have done so for many > already: LM63, LM99 etc.) but the I2C access to these chips is the > graphics driver's job. Which are improving over time in this respect, > so it should work someday. I'm not actively working on this though > (probably due to the lack of nVidia card in my systems.) > > -- > Jean Delvare > > _______________________________________________ > lm-sensors mailing list > lm-sensors@xxxxxxxxxxxxxx > http://lists.lm-sensors.org/mailman/listinfo/lm-sensors > I have 3 of these motherboards including one on a Win 7/Fedora 13 dual boot. What would you like to know? _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
